机票预定系统用C++语言怎么写

下面是一个简单的机票预订系统的C++代码示例，仅供参考：

#include <iostream>
#include <vector>
#include <string>

using namespace std;

// 航班类
class Flight {
public:
    string flightNo; // 航班号
    string departureTime; // 起飞时间
    string arrivalTime; // 到达时间
    string departureLocation; // 起飞地点
    string arrivalLocation; // 到达地点
    string airline; // 航空公司
    vector<string> economySeats; // 经济舱座位列表
    vector<string> businessSeats; // 商务舱座位列表
    vector<string> firstClassSeats; // 头等舱座位列表

    // 构造函数
    Flight(string flightNo, string departureTime, string arrivalTime, 
           string departureLocation, string arrivalLocation, string airline) {
        this->flightNo = flightNo;
        this->departureTime = departureTime;
        this->arrivalTime = arrivalTime;
        this->departureLocation = departureLocation;
        this->arrivalLocation = arrivalLocation;
        this->airline = airline;
    }

    // 添加座位
    void addSeat(string seatNo, string seatType) {
        if (seatType == "economy") {
            economySeats.push_back(seatNo);
        } else if (seatType == "business") {
            businessSeats.push_back(seatNo);
        } else if (seatType == "firstClass") {
            firstClassSeats.push_back(seatNo);
        }
    }

    // 获取可用座位
    vector<string> getAvailableSeats(string seatType) {
        if (seatType == "economy") {
            return economySeats;
        } else if (seatType == "business") {
            return businessSeats;
        } else if (seatType == "firstClass") {
            return firstClassSeats;
        }
        return vector<string>();
    }
};

// 座位类
class Seat {
public:
    string seatNo; // 座位编号
    string seatType; // 座位类型
    bool isSold; // 是否已售出

    // 构造函数
    Seat(string seatNo, string seatType) {
        this->seatNo = seatNo;
        this->seatType = seatType;
        this->isSold = false;
    }
};

// 机票类
class Ticket {
public:
    Flight flight; // 航班信息
    Seat seat; // 座位信息

    // 构造函数
    Ticket(Flight flight, Seat seat) {
        this->flight = flight;
        this->seat = seat;
    }
};

// 订单类
class Order {
public:
    string passengerName; // 乘客姓名
    Ticket ticket; // 机票信息
    bool isPaid; // 是否已支付

    // 构造函数
    Order(string passengerName, Ticket ticket) {
        this->passengerName = passengerName;
        this->ticket = ticket;
        this->isPaid = false;
    }

    // 支付订单
    void pay() {
        this->isPaid = true;
    }
};

// 支付类
class Payment {
public:
    double amount; // 支付金额
    bool isPaid; // 是否已支付
    string paymentMethod; // 支付方式

    // 构造函数
    Payment(double amount, string paymentMethod) {
        this->amount = amount;
        this->paymentMethod = paymentMethod;
        this->isPaid = false;
    }

    // 支付
    void pay() {
        this->isPaid = true;
    }
};

// 机票预订系统类
class FlightBookingSystem {
private:
    vector<Flight> flights; // 航班列表
    vector<Order> orders; // 订单列表
    vector<Payment> payments; // 支付列表

public:
    // 添加航班
    void addFlight(Flight flight) {
        flights.push_back(flight);
    }

    // 查询航班
    vector<Flight> searchFlights(string departure, string arrival) {
        vector<Flight> result;
        for (Flight flight : flights) {
            if (flight.departureLocation == departure && flight.arrivalLocation == arrival) {
                result.push_back(flight);
            }
        }
        return result;
    }

    // 预订机票
    bool bookTicket(string passengerName, Flight flight, string seatNo) {
        vector<string> seats = flight.getAvailableSeats(seatNo.substr(0, 1));
        for (int i = 0; i < seats.size(); i++) {
            if (seats[i] == seatNo) {
                Seat seat(seatNo, seatNo.substr(0, 1));
                seat.isSold = true;
                Ticket ticket(flight, seat);
                Order order(passengerName, ticket);
                orders.push_back(order);
                return true;
            }
        }
        return false;
    }

    // 支付订单
    bool payOrder(int orderId, double amount, string paymentMethod) {
        for (Order& order : orders) {
            if (orderId == order.passengerName && !order.isPaid) {
                Payment payment(amount, paymentMethod);
                payments.push_back(payment);
                payment.pay();
                order.pay();
                return true;
            }
        }
        return false;
    }
};

int main() {
    // 创建航班
    Flight flight1("CA123", "2022-01-01 08:00:00", "2022-01-01 10:00:00", "Beijing", "Shanghai", "Air China");
    flight1.addSeat("E01", "economy");
    flight1.addSeat("E02", "economy");
    flight1.addSeat("B01", "business");
    flight1.addSeat("B02", "business");
    flight1.addSeat("F01", "firstClass");
    flight1.addSeat("F02", "firstClass");

    // 创建机票预订系统
    FlightBookingSystem system;
    system.addFlight(flight1);

    // 查询航班
    vector<Flight> flights = system.searchFlights("Beijing", "Shanghai");
    for (Flight flight : flights) {
        cout << "Flight No: " << flight.flightNo << endl;
        cout << "Departure Time: " << flight.departureTime << endl;
        cout << "Arrival Time: " << flight.arrivalTime << endl;
        cout << "Departure Location: " << flight.departureLocation << endl;
        cout << "Arrival Location: " << flight.arrivalLocation << endl;
        cout << "Airline: " << flight.airline << endl;
        cout << "Available Seats: " << endl;
        vector<string> seats = flight.getAvailableSeats("economy");
        for (string seat : seats) {
            cout << seat << " ";
        }
        cout << endl;
    }

    // 预订机票
    bool success = system.bookTicket("张三", flight1, "E01");
    if (success) {
        cout << "Booking Success!" << endl;
    } else {
        cout << "Booking Failed!" << endl;
    }

    // 支付订单
    success = system.payOrder(0, 1000, "Alipay");
    if (success) {
        cout << "Payment Success!" << endl;
    } else {
        cout << "Payment Failed!" << endl;
    }

    return 0;
}

需要注意的是，以上代码仅为示例代码，实现方式和具体功能可能与真实的机票预订系统有所不同，具体需求还需要根据实际情况进行调整和完善。